Milking-machine teat-cup claw



CPWILLIAMS AND J. A. YOUNG.

MILKING MACHINE TEAT CUP CLAW.

APPLICATION FILED APR- 7, 1920.

1 ,358,667 Patented Nov. 9, 1920,

If? mg 4- UIL W} Attormy omrso STATE SfP ATENT oFFicE.

CHARLES WILLIAMS AND J A'MEE ALEXANDER YOUNG, OF AUCKLAND, NEW ZEALAND.

MILKING-MACHINE CHEAT-CUP CLAW.

Specification of Letters Patent.

v Patented Nov. 9, 1920.

1' '0 all whom it may concern Be it known that we, (Jr-mamas WViLLiAius and Limits rhLEXnNDER YOUNG, citizens of the Dominion of New Zealand, of l9-2l Lorne street, Auckland, New Zealand, have invented certain new and useful Improv ments in lllilking-lvlachine 'leat-Uup Claws, of which the following is a specification.

This invention relates to the teat cup claws oi"? milking machines and provides an improvement in claws, whereby the admission of air to the milk and vacuum pipes and connections of the machine is automatically prevented, on a teat cup or cups, falling oil or becoming dislodged from the teat or teats of an animal during milking operations.

According to the invention the cross tubes or connections of each claw, with which the milk spaces of the teat cups are in communication, are provided at each end with a plug cock, having a handle in the form of a nipple.

The flexible connections from the milk spaces-of the cups are connected to the cock handles, the latter each being formed with a passage therethrough which enters a port in the plug.

When placing the teat cups on an animal at the commencement of milking operations, the plugs and handles 01 the cocks are turned so that milk can be drawn from the milk spaces of the cups into the milk tubes of the claw.-

Should a teat cup fall oil or be dislodged from a teat, the weight of the falling cup owing to its connection to a cock handle, causes the cock plug to turn and close the cross milk and vacuum tube at the end con nected to the dislodged cup, the result of which is that the admission of air to the milk and vacuum pipes of the machine is prevented, and the vacuum therein is not broken down or reduced, thereby enabling the other teat cups to remain in position on the teats and milking operations to continue without interruption.

Referring to the accompanying drawing, in conjunction with which the invention. will be more fully described:

Figure 1 is a plan view of a claw con structed according to the invention.

Fig. 2 is a sectional plan view of one end of a cross vacuum and milk tube or con- 5 nection and a cock fitted thereto.

Figs. 3 and 4 are part elevations of a cross milk and vacuum tube or connection, showing a cock in the on and oil positions respectively.

The claw consists of the usual main vacuum tube adapted to be connected with the infiator spaces of the teat cups through the cross tubes or connections 2, and the usual main milk and vacuum tube 3 adapted to be connected with the milk spaces of the teat cups through the cross tubes or connections 4.

The milk and vacuum cross tubes at are fitted at both ends with cocks 5, the latter having handles in the form of nipples and containing passages 7 which enter ports 8 in the plugs 9.

The flexible connections 10 from the milk spaces of the teat cups are connected to the handles 6, and when placing the cup on the teats at the commencement of milking operations, the handles 6 and plugs 9 are turned so that milk drawn from the teat, can pass from the flexible connections 10 to the tubes 4, via the the passages 7 ports 8 and ports 11 in the cock bodies. The flexible connections from the inflator spaces of the teat cups are made to the tubes 2 in the usual way.

Should by any chance, a-teat cup fall oil a teat, it will in falling owing to its connection to a cock handle 6 cause the plug 9 of the cock to turn and close the port 11 leading to the tube 4, thereby closingthe latter at the end connected to the dislodged cup, and preventing the admission of air to the milk and vacuum pipes and connections of the machines, which enables the a vacuum of the plant to be maintained at the degree necessary to enable milking opera tion to continue.

What we claim and desire to secure by Letters Patent of the United States is 1. A milking machine teat cup claw, com

prising a main vacuum tube in communi 2 V inb w of the claw; a plug cock fitted on the end In testimony whereof We have signed our gzpid tube, containing a port through names to this specification in the presence of 10 it body, opening into said cross tubey'a two Witnesses.

port in the plug adapted to be brought op- CHAR-LES VYILLIAMS.

posite the port in said body at handleih the JAMES ALEXANDER YOUNG. form of a nipple to take a flexible tube; and Witnesses:

2t pzissage through saidhandle, entering the "WiLLIAM PoRIcHEs,

port in the'plug. V MARY Pmme'ron. 

